Rewrite references to "wtf/" to "platform/wtf/" in platform/heap.

third_party/WebKit/Source/platform/heap/CallbackStack.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CallbackStack_h
 #define CallbackStack_h
 
 #include "platform/heap/BlinkGC.h"
-#include "wtf/Allocator.h"
-#include "wtf/Assertions.h"
-#include "wtf/Threading.h"
-#include "wtf/ThreadingPrimitives.h"
+#include "platform/wtf/Allocator.h"
+#include "platform/wtf/Assertions.h"
+#include "platform/wtf/Threading.h"
+#include "platform/wtf/ThreadingPrimitives.h"
 
 namespace blink {
 
 // The CallbackStack contains all the visitor callbacks used to trace and mark
 // objects. A specific CallbackStack instance contains at most bufferSize
 // elements.
 // If more space is needed a new CallbackStack instance is created and chained
 // together with the former instance. I.e. a logical CallbackStack can be made
 // of multiple chained CallbackStack object instances.
 class CallbackStack final {
@@ skipping 127 matching lines @@
   Item* item = m_first->pop();
   if (LIKELY(!!item))
     return item;
 
   return popSlow();
 }
 
 }  // namespace blink
 
 #endif  // CallbackStack_h